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Elenna [48]
3 years ago
10

What is heat of vaporization?

Chemistry
2 answers:
Sauron [17]3 years ago
8 0

Answer:

D.

Explanation:

The heat of evaporation, is the amount of energy that must be added to a liquid substance, to transform a quantity of that substance into a gas. The heat of vaporization is a function of the pressure at which that transformation takes place.

kirza4 [7]3 years ago
3 0

B. It is the heat required to change a gram of substance from solid to liquid

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Which electron configuration represents the electrons of an atom in an excited state? * 2-3 2-7-1 2-8 2-8-1​
Lemur [1.5K]

2-7-1

<h3>Further explanation </h3>

Electrons can move the shell up or down by releasing energy or absorbing energy  

Excited electrons show higher electron transfer to the shell by absorbing energy  

So it can be concluded that there are 2 conditions:  

Ground state is the state of electrons filling shell with the lowest energy levels.  

Excited state is the state of electrons which occupies a higher energy level  

The state of excited electrons can be seen from the presence of electrons which do not fill the skin completely but fill the skin afterward  

2-7-1

From its 8 electron configuration, filling 3 shells, 2 electrons in the firs shell, 7 electrons in the second shell and 1 electron in the third shell

the electrons in the third shell should fill the electrons in the second shell first according to Aufbau rule (lower energy shells)

\tt  1s^22s^22p^4\rightarrow ground~state\\\\1s^22s^22p^33s^1\rightarrow excited~state

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2 years ago
How does increasing the temperature affect a reaction?
Luden [163]

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4 0
3 years ago
Consider the following equilibrium reaction having gaseous reactants and products. 4HCl + O2 ⇌ 2H2O + Cl2 Which of the following
gulaghasi [49]
<h3><u>Answer</u>;</h3>

B.The rate of forward reaction increases.

<h3><u>Explanation;</u></h3>
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Explanation:

The answer would be  B.

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3 years ago
Answer question number 2
kipiarov [429]

Answer:

it would be the second choice

3 0
2 years ago
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